CVE-2026-65801

Microsoft — Microsoft Exchange Online Elevation of Privilege Vulnerability

Patch Tuesday

What EVULNABLE says

EVULNABLE Risk · priority 13/100 Elevated Intelligence coverage 80/100 — no Microsoft Exploitability Index, no ransomware association data, no CISA KEV listing date
Patch Tuesday

Why it matters: CVSS base score 10.0, and an EPSS probability of 0.005.

Scheduled Maintenance

The priority band answers “how soon”, not “how bad” — see Methodology for what it weighs and where it abstains.

The evidence behind it

Published measurements for CVE-2026-65801
MeasureValueSource
CVSS base score 10.0 —
FIRST EPSS 0.005 (41.6th pctl) FIRST
Actively exploited Not confirmed Patch Tuesday
Intelligence coverage 80/100 — no Microsoft Exploitability Index, no ransomware association data, no CISA KEV listing date

This page is an opinion about urgency. Where it and a source of record disagree, the source of record is the record.

NVD ↗ Microsoft ↗